Fluid dispensing apparatus



Nov. 26, 1940. L. o. YEOMANS 2,223,145

FLUID DISPENSING APPARATUS Filed Oct. 7, 1936 9 Sheets-Sheet 1 IIIIJH Ill @NVENTOR 4am ATTORNEYS Nov. 26, 1940. L. o. YEOMANS 2,223,146

FLUID DISPENSING APPARATUS Filed 001:. 7, 1936 9 Sheets-Sheet 2 gwi 'Qwis M M ATTORNEYS NOV. 26, 1940. 'Q YEQMANS 2,223,146

FLUID DISPENS ING APPARATUS INVENTOR ATTORNEYS Nov. 26, 1940. Q YEQMANS I 2,223,146

FLUID DI SPENS ING- APPARATUS Filed Oct. 7, 1936 9 Sheets-Shet 4 ATTORNEYS L. o. YEOMANS 2,223,146

FLUID DISPENSING APPARATUS Filed Oct. 7, 1936 9 Sheets-Sheet 5 Q .5 3 m 3m @VENTOR m ATTORNEYS {gm gm All Nov. 26, 1940.

CL. 0. YEOMANS FLUID DISPENSING APPARATUS Filed Oct. 7, 1,936 9 Sheets-Sheetfi 8; U Q INVENTOR h; .SQA

knlwi v M ATTORNEYS v m v Patented Nov. 26, 1940 UNITED STATES PATENT OFFICE FLUID DISPENSING APPARATUS Lucien 0. Yeomans, Merrick, N. Y., m of seventy-seven and one-half hundredthato WiiliamLCashmamAsburyParhNJ.

Application October 7, 1936, Serial No. 104,373

31 Claims. (C'L 194-13) and is operable automatically to shut off the flow of fluid when the desired quantity has been de livered. The new apparatus is accurate and reliable in operation and may be provided with means for indicating automatically in advance of the actual delivery, the amount or the cost, or

both, of the fluid which the apparatus is preset to deliver. r

One feature of the invention resides in the provision of a novel dispensing apparatus which is operable to deliver a variable preset amount of fluid indicated in terms of cost or volume, or both, by automatic computing means prior to delivery, and which is readily adjustable to vary the operating ratio of the cost and volume computers in accordance with changes in the price The amount of fluid dispensed by the delivery means is determined by a pair of control members which are movable relatively by the metering device. lhe control members normally assome initial relative positions wherein the delivery means is rendered inoperative, but one of the members maybe advanced relative to the other by suitable actuating means through a distance commensurate with the amount of fluid to be delivered, and when this member is so advanced fluid may be dispensed through the delivery means. A cost indicating device is'operable by the actuating means for the advancing control member, and a variable speed transmission is disposed between the actuating means and either 43 the advancing control member or the indicating device, whereby the advance of the control memher is indicated in terms of cost by the indicating device in accordance with the setting of the transmission. ,A volume indicator may be oper- 45 ated by the actuating means for the advancing control member, or by the meter which moves the control members relatively to their initial relative,

v55 By adjusting the variable speed transmission, the

distance through which the advanclng control member is preset, and therefore the amount of delivery, for each unit of cost shown on the indicator may be varied to accommodate changes in the selling price of the fluid. 5 Another feature of the invention resides in the provision of a novel dispensing apparatus which may be operated either by the use of coins inserted in part of the apparatus, or by an attendant without the use of coins. To this al0 end, the apparatus is preferably provided with a lock operable by a key to connect the preset control member to a manually controlled actuating means or to a coin controlled actuating means, as desired. .15

Still another feature of the invention resides in a novel coin operated mechanism for actuating the preset control member to provide for delivery of a quantity oi fluid commensurate with the value of the coins registered by the mechanism. 0 The presetting of the control member is preferably eifected by the coin controlled means through an electric motor or other power source which is connected to the preset member through a clutch mechanism. The presetting motor is 25 operated continuously during the coin registering operation but is normally prevented from presetting the rotatable member by reason of the clutch which is normally disengaged. The clutch is operatively connected to the coin registering 0 mechanism, and the latter operates in response to the action of each coin in a set of coin storage chutes to engage the clutch while the presettor motor rotates the driving member of the clutch a predetermined amount depending on the value, 35 of the initiating coin, and thereby presets the rotatable control member through a certain angle. v

In the preferred tom of my invention, the coin registering mechanism includes a plurality, of electrical circuits, one for each coin denomination, each of which is prepared but not closed in response to the presence of .a coin in its corresponding storage chute. The fln'al closing of the respective circuits is effected at random by means of a selector or distributor which rapidly contacts the several circuits in sequence. When the selector finds a prepared circuit, the circuit is immediately completed and initiates the operation of a timing mechanism, at the same time closing the presettor clutch by means of a solenoid. A separate timing mechanism is provided for each circuit and is adapted to maintain the circuit closed for a time interval commensurate with the yaiue of the coin represented by the circuit. At

the end of the time interval the circuit is broken thereby disengaging the presettor clutch, and the mechanism is ready to register another coin. After the distributor has selected a prepared circuit, the coin which prepared the circuit is automatically removed to a storage box so that another coin may take its place. Means are provided for opening the other circuits while any given circuit is in operation, so that the selector may not select another circuit until one circuit has completed its operation. Thus, the presettor.

button prepares the machine for the reception of coins by starting the presettor and pump motors and the registering mechanism. The second button starts the delivery of gasoline alter the presetting operation by opening the hose discharge valve and the third button is a safety feature which permits the customer to close the hose valve before the full amount of gasoline is delivered. The latter buttons are arranged to allow the customer to alternately open and close the hose discharge valve until the proper amount of gasoline, as determined by the presetting of the delivery control member, is discharged. An electric bulb individual to each button may be arranged to light when the operation is successfully initiated by the button and thereby indicate which operation is in progress. Preferably, means are provided for rendering the gasoline delivery button inoperative while the coin registering mechanism is operating, and also for preventing the insertion oi a coin in the machine at any other than the proper part of the transaction cycle.

If desired, the presettor or delivery control member maybe arranged to permit delivery of gasoline only when it has been preset more than a certain minimum amount, thereby insuring against transactions involving less than a desired minimum amount of money. Also, the presettor may be arranged to return all coins after the registering of coins aggregating a certain value representing the maximum capacity of the machine for a single transaction, as determined by the greatest amount which the delivery control member can be preset. When the properamount of gasoline has been delivered, that is, when the rotatable member operated by the discharge volumeter has caught up with its cooperating preset member, the presettor operates through suitable means to stop the pump and presettor. motors and the coin registering mechanism. However, a time controlled mechanism is preferably provided for automatically-stopping the machine after a predetermined time interval to prevent the machine from running continuously in the event that the customer does not complete the transactionby taking the allotted amount of gasoline.

It will be observed from the foregoing that the new machine is entirely automatic except for a few simple operations which the customer performs, and that the possibility of improper operation of the machine by the customer is eliminated so that the machine is substantially foolproof. At the conclusion of each transaction the gasoline measuring and delivery mechanisms are ready for a new transaction, and it is not necessary for all the parts thereof to be returned to an initial position after each operation. The coin registering mechanism is accurate and of simple construction and may be operated at high speed to register the coins in a short time so that a trans action may be completed substantially as quickly as with an attendant operated pump.

For a more complete understanding of the invention, reference may be had to the accompanying drawings, in which Fig. 1 is a front view of one form of the new apparatus with part of the casing removed;

Fig. 2 is a view in perspective of parts of the apparatus shown in Fig. 1;

Fig. 3 is a side view of the apparatus shown in Figs. 1 and 2 with the casing removed;

Fig. 4 is a plan view of the preset member of the delivery control mechanism; v

Fig. 5 is a plan view of the member which cooperates with the preset member oi, the delivery control mechanism;

Fig. 6 is a side view of the two cooperating rotatable members shown in Figs. 4 and 5 comprising the delivery control mechanism;

Fig. '7 is a smtion on line i---'! of Fig. 6;

Fig. 8 is a section on the line 8-8 of Fig. 3;

Fig. 9 is a section through the time controlled mechanism, which iunctions to stop the a paratus;

Fig. ii) is a section on the line ill-46 oi Fig, 9;

Fig. 11 is a plan view of part of the mechanism shown in Fig. 9;

Fig. 12 is a section through the regulating device for the variable speed transmission;

Fig. 13 is a view partly in section oi the variable speed transmission; p I

Fig. 14 is a front view of the variable speed transmission with the cover removed;

Fig. 15 is a plan view of the coin storting device and the coin storage chutes;

Fig. 16 is a true plan view or the coin storage chutes shown in Fig. 15;

' Fig. 17 is a section on the line 81-41 of Fig 15 looking in the direction of the arrows;

Figs. 18 and 19 are sections on the lines ill-i8 and iQ-lt, respectively, of Fig. 1'7;

Fig. 20 is a section on the line 2c2ll of Fig. 15;

Fig. 21 is a section on the line 2i-2l of Fig. 15 looking. in the direction oi the arrows;

Fig. 22 is a section on the line 22-22 of Fig. 2!);

Fig. 23 is a top view of the metering drum of the coin registering mechanism;

Figs. 24 and 25 are sections onthe lines 24-24 and 25-45, respectively, of Fig. 23;

Fig. 26 is a detail view of one of the contacts 0! the coin metering drum;

Fig. 27 is a similar view of an adjustable contact employed on the coin metering drum; and

Fig. 28 is a schematic diagram of'a wiring circult which may be employed in the new machine.

Referring to the drawings, the numeral 80 (Fig. 1) indicates a casing in which the parts of the apparatus are disposed. The front of the casing comprises a main panel 3| which is formed near the top with an inset portion 32 surrounding a sub-panel 33 for accommodating the cyclometers and other indicators. An upright standard 34 in each corner of the casing is secured to a suitable base (not shown) and the several standards serve as'a frame for supporting the sides and top of the casing. seemed to the standards in spaced relation are two horizontal' supporting members II and 36, and mounted on the lower horizontal member 36 is an electric motor 31 which is connected by means of a belt 36 to a pump 19. The latter is fastened to the lower face of member 36 and is provided with an inlet pipe 40 leading down to a gasoline storage tank (not shown). The discharge end of the pump is connected through a volumeter 4| to a discharge pipe 42 which leads to the top of the casing where it is connected to a hose 4!. A discharge valve 44 governs the flow of gasoline through the discharge pipe 42 and the hose. The discharge valve is controlled by a solenoid 46 having a plunger 46 which is operatively 'connected to the valve: The pump is preferably of the recirculating type in which the charge is recirculated into the storage tank through a relief valve (not shown) during the time that the discharge end of the pump is closed. An air separator 41 is connected to the discharge end of the pump through the volumeter 4|.

Discharge control mechanism The indicating member of the volumeter 4| is operatively connected to one end of a shaft 46. the other end of which is connected to the operating shaft 49 of a counting device 60 suitably secured to the frame of the machine (Figs. 3 and 7) The counter 66 serves to record the total number of gallons discharged by the pump, that is, to give an indication of the number of gallons discharged for all transactions as distinguished from the number discharged for each transaction. Shaft 49 extends through the counting device and the horizontal member 36 and is engaged near its upper end in a bushing 5| secured to member 36. A pinion 62 is mounted on the upper end of shaft 49 and meshes with an internal gear 53 which is integral with a disc 54 forming a part of the delivery control mechanism. The latter is provided with a central boss 55 which receives a shaft 66 on which the disc is rotatably mounted. The shaft 56 is formed with a reduced portion 51 and this portion ex- -tends through the horizontal member 36 and a collar 58 on its lower end engaging mem-- ber 36 to secure the shaft against displacement.

it will he observed that when the pump 39 discharges gasoline through delivery valve 44, the gasoline will drive the volumeter 4i and the latter in turn will rotate disc 54 in a clockwise direction, as shown in Fig. 5, through an angle commensurate with the quantity of gasoline discharged. A cam 59 is secured to the top of disc 54 and has a face which inclines sharply downwardly in the direction opposite to the direction of rotation of the disc (Fig. 5) and relatively.

gradually downwardly in the direction of rotation of the disc. The face of the cam intermediate the sloping portions is of a uniform height. Also, the disc provided with an opening 60, and on the same radius as the opening an insulated pin 6! is secured to the top of the disc near the outer edge thereof.-

A second disc 62 of the control mechanism is rotatably mounted on disc 54 in spaced relation therewith. The disc 62 is provided with a central opening which receivesa centrally disposed pedestal 63 integral with disc 64. A set of antifriction balls 64 is arranged in the lower face of disc 62 and serves to support the latter disc on the upper face of disc 54. Mounted on the top the bracket.

of the upper disc 62 is an upright member 66 made of a suitable insulating material and having three pairs of spring metal contact arms 66, 61 and 66, respectively, embedded therein. The contact arms 66, 61 and 66 extend outwardly from the member 66 and are provided with cooperating contacts 66, l1 and 66, respectively.

. The lower arm of each pair of contact arms is longer than the upper arm, and the three lower arms oi the pairs are connected together at their outer ends by an insulated member 69 which terminates below the lower arm of contact arms 66. The spring eflect in the lower arms of the pairs of contact arms 66, 61 and 69 normally holds member 69 in a depressed position and maintains the respective contacts 66', 66 and 61' normally open.

A bracket 10 is mounted on the top of the upper disc 62 near the upright member 66. A solenoid H having a plunger 12 is supported on The plunger 12 is provided with an extension in the form of a pin I3 which extends downwardly through an opening in the disc 62. The plunger 12 and the opening in the disc 62 through which its pin 13 projects are so positioned that the pin may drop into the opening 60 in disc 54 when the two discs occupy a certain relative position. When the machine is not operating, the solenoid H is deenergized and pin 13 is in its lowermost position where it extends into the opening 60. Thus, the pin 13 may occupy any one of three positions, namely, its lowermost position in which it extends into hole 60, its uppermost position in which it is held when the solenoid H is energized, and an intermediate position in which it rests on the top of the lower disc when the solenoid is deenergized and the hole 60 is out of alignment with the pin.

An arm 14 extends outwardly from pin 13 and engages the bottom of the insulating member 69, so that when solenoid ll is energized and raises its plunger 12, the arm 14 raises member 69 and the lower arm of each pair of contact arms, thus closing the contacts 66', 61' and 68'. The contact arms 66, 61 and 66 are arranged so that "when pin I3 is in its intermediate position, that is, when it is resting on the top of the disc, confacts it and 68' will be open and contacts 61' will he closed.

An insulating post '16 is secured on the top of the upper disc and carries a pair of contact arms 36 provided with normally closed contacts 16. One of the contact arms T6 has an extension in the form of a latch 11 (Figs. 4 and 6) which extends over the edge of the upper disc and is provided at its end with a projection 73 having a cam The pro- When the upper disc is rotated substantially a complete revolution relative to the lower disc, the cam edge 18 of projection 58 engages pin 6i, thus causing contacts 16' to open. Also mounted on top of the upper disc 62 is an insulating memher 36 carrying a pair of contact arms 8| which are provided with normally closed contacts 8|. The upper contact arm 8| is longer than the lower arm and carries at its end a pin 82 which extends through a hole in the upper disc. When the two discs are locked together by pin 13, contacts 6| are closed, but due to the contour of cam 69 on disc 64, the slightest angular displacement of disc 62 in a clockwise direction (Fig. 4)

relative to disc 84 will serve to open contacts 8I and the latter will remain open as long as pin 82 is under the influence of cam 59. The purpose of contacts I8 and 8| will be described presently. v

The top of the upper disc 62 is formed with a central boss 83 in which one end of a shaft 84 is fixed (Fig. 3). The other end of the shaft extends through a supporting plate 85 mounted on an upright 85 connected to horizontal member 36 and is engaged in a bushing 88 secured to the supporting plate. An insulating drum 81 is mounted on the intermediate portion of shaft 84 and this drum is provided with commutator rings 88 which rotate with the drum and the upper disc. Wires lead .irom various contacts carried by the upper disc to these rings, as will be described presentiy. A plate 89 of insulating material -extends downwardly from plate 85 and carries brushes 38 engaging the commutator rings.

The shaft 84 is adapted to be rotated by an electric motor 81 (Fig. 2) to preset or advance the upper disc 62 relative to the lower disc. The motor 9! is suitably mounted in the casing 82 and is provided with a drive shaft 82 on the end of which is a worm 93 engaging a worm gear 84 mounted on the end of a shaft 98. The latter shaft is supported in bearings (not shown) and is connected to the driving member 86 of a variable speed transmission 91 (Figs. 3, 13 and 14) which is supported on a standard 98 mounted on the horizontal member 85. The variable speed transmission 82' will be referred toin greater de tail presently The driven member 93 of the variable speed transmission is connected to a shaft Iild on the endof which is the driving member Iill of a friction clutch. The driven member Hi2 of the iriction clutch is in the form of a collar having a circumferential groove I83 therein, and is splined on a shaft WI. This shaft is supported in hearings on a pair of spaced brackets I mounted on the supporting plate 85. The collar m2 is movable longitudinally on shaft M4 and is provided with an extension sleeve Hit surrounding the shaft and on the end of which a sprocket wheel Hi is fixed. Mounted on shaft I84 near the end thereof is a worm H38 (Fig. 2) which engages and is adapted to drive a worm wheel I88 keyed on the upper end of shaft 8%. A bracket lib extends upwardly from the supporting plate 85 and pivoted thereon is .a yoke iii the end of which is engaged in the groove I83 of clutch member I82. An arm II 2 extends at right angles to the yoke from the pivoted end thereof and is connected to one end of a spring N3, the other of which is secured to a pin H4 on the bracket. By means of the spring H8, the yoke is normally held in position to disengage clutch member I02 from its cooperating member IIlI. An electromagnet I I5 is mounted on bracket I I 8 and is adapted when energized to raise arm 2 against the action of spring H8 and thereby cause the yoke to engage clutch member I82 with its cooperating member IIII. The energization of electromagnet III is controlled by a coin registering mechanism which will be referred to presently.

Variable speed transmission The variable speed transmission 81 is preferably of the type described and claimed in an application of Carl W. Weiss for United States Letters Patent, Serial No. 90,105, filed July 11, (I

1936. The transmission comprises a casing III having a front cover III and a rear cover II8 which has a generally conical shape. The front and back covers are secured to the casing by bolts I28. The driving member 88 of the transmission is in the form of a cylindrical roller mounted on 5 the motor driven shaft 95. Shaft 95 is engaged in a bearing in one of the side walls of casing Ill and the end of the shaft is secured against lateral displacement in an opening I2I in the opposite side wall of the casing. The driven member 88 of the transmission is in the form oi a disc and has a shaft I22 extending from the rear face thereof connected to the smaller shaft 108. Shaft I08 and its extension I22 are rotatably mounted in bearings (not shown) in the rear cover II8 of the casing, with their axes slightly above the axis of roller 85. A ball I23 having a diameter slightly greater than the shortest distance between the flat surface of disc 89 and the cylindrical surface of roller 26, is disposed between the disc and roller and forms an idler or driving connection between these members (Fig. 13). The space between the disc and roller and the distance that the axis of shaft I04 is dis-- posed above the axis of roller at is such that 25 when the ball i223 is moved along the roller it will. contact disc 99 along a line intersecting the axis of shaft NM. The ball is arranged in a cage i2! which ismovable'axially on a rod 25 mounted in the casing ii! parallel to the axis of roller 98. The cage engages the ball lightly on opposite sides to prevent movement of the ball relative to the cage in the direction or the roller and yet permit the ball to rotate in the-cage. However, the cage does not engage the top or bottom of the and the latter is held between the disc and 2' tier only by its weight.

The top oi cage M4 is provided with a rack I26 which engages a gear segment i2? secured on the end of shaft 528. The shaft is rotatabiy 0 mounted in a hearing me secured to the rear face of cover lit and the outer end of the shaft extends into ahollow boss M8 on the outer face of cover Ht} ,A. flexible drive shalt (not shown) is connected to the outer end of shaft I28 inside the hollow boss E38 and extends through a cable till to a hollow boss i82 fixed on a price index member i333. The end oi the flexible drive shaft inside the hollow boss 532 is connected to the end or a shaft I84 which extends through'oo an opening in the member I83 and is mounted on a gear lit. The gear I85 is rotatably mounted on a support 338 connected to the inside of subpanel-83. A cylinder lock I37 extends through an opening in sub-panel 88 and is provided on the inner end oi its operating shaft (not shown) with a pinion I38 meshing with the gear I35. Thus, when a key is inserted in cylinder I31 on the front of sub-panel 88, the pinion I38 may be rotated thereby rocking the geai segment I21 through gear I85, the flexible drive shaft in cable I3I, and shaft I28. The index member I83 rotates with gear I and is provided near its lower end with a plurality of openings I39 spaced equidistant from shaft I34. A 55 spring arm I40 is mounted on the inner face of sub-panel 88 and carries a stop I which is adapted to enter successively the openings I39 in member I88 as gear I85 is rotated, and when the stop is engaged in one of the openings I 39 70 the gear is held against angular displacement except by rotation of the key operated pinion I38. The index member I88 is provided on its outer face with a price mark for each opening I89, and when any one of the openings I88 is oppo- 7o sesame site the stop III, its corresponding price mark is visible through an opening I82 in sub-panel 88. It will be observed that when gear segment I21 is rocked by rotation of the key-operated pinion I38, cage I26 will be moved along rod I26 and thereby vary the speed ratio of the transmission by changing the radial position of the ball on disc 88. The rack I28 is so arranged with respect to gear segment I21 that when the latter is rocked to its extreme left-hand position, as viewed in Fig. 14, the ball I28 will be disposed a short distance from the center of the driven disc. That is, the ball cannot be adjusted to overlie the center of the disc, in which position the disc would not be driven properly by the driving roller 96. When. ball I23 is at its extreme inner position or the disc, the latter will be driven at its As the ball is moved out is r :c by rocking gear segment iii, angular speed of disc 96 to that crease, the ratio being inversely is distance of the ball from the That is, time will he mum spe d wire h T i an operative connection between segment 'C'yc-Zcmei twirl automatic cut-o1? mechanisms lire is provided intermediate its ends with a g .1 meshes with a gear l6; 3 mounts shah. i635 (Fig. The letter shalt mounted in bearings (not shown) e e of the machine and has a worn-i. 53 sec red on the end thereof. The worm H6 engage" a worm wheel 66 which is secured a shaft 566 mounted in suitable bearings (not shown? on the machine frame. On one end of shaft I is a coin metering drum I56 which will be referred to presently, and on the other end is a worn 1J6! engaging a worm wheel I88 mounted on a shaft in. The latter is suitably mounted, in bearings (not shown) and has fixed on its outer end a sleeve I66 integral with a disc It! of an automatic cut-0d mechanism for stopping the machlng jtger,fishes operatic! for a predeterminedtime interval (Fig. 9). Sleeve S66 is provided with a pair of commutator rings 62 engaging a pairof brushes I63 which will be referred to in greater detail presently. Pivotally mounted on a post I64 on the face of disc I6! a contact lever I65 (Fig. ll). One end I65 of the contact lever is adapted to engage a cooperating contact member I66 mounted on disc iii and suitably insulated therefrom. The other end it'd oi? the contact lever is adapted to engage an adjustable contact member I61 mounted in an insulating member 68 on the disc.

spring 69 is connected at one end to a n 63 and at the other end to "66, the spring normally urging position where its end I65 engages adju able contact I81and its end I65 is disengaged ii'Um contact I66. The two contact members 66 and I61 are electrically connected by a, wire 5'. l which in turn is connected to one of the commutator rings I62 by a wire I12. The other commutator ring I62 is connected to the contact lever it?) by a wire I13.

A disc I15 is rotatably mounted on shaft I59 in opposed relation to disc I6I and is provided on its face with a pin I16. The pin I16 is sufllciently long to engage the end I880 of contact lever I66, which end is formed with a flange extending outwardly from disc I8I. However,

the pin is too short to engage the other end I881: of contact lever I88 and passes over the 6 latter when disc I16 is rotated relative to disc IN. A pinion I11 is loosely mounted on shaft I68 in proximity to disc I16 and is provided with an integral collar I18 having an inside diameter substantially greater than that of shaft I69. The end of collar I18 is formed with a plurality of elongated slots I18 and closely surrounds the circumferential surface oi. a collar I86 integral with disc I16. An adjustable band I8I surrounds collar I86 near the end thereof and maintains the portions oi? the collar between the slots in frictional engagement with collar I86. The pinion i1? meshes v. the teeth of a vertical rack 32 which suitably mounted on the machine frame is: e idwlse movement (Figs. 22 and 33. At its lower the rack carries a piston flit wh supported l of piston l8 flexible weight 886 is secure 86d and is provide extends into t The bottom recess in which s ed. A cylindrical e reel: l8? above cylinder reduced portion E66 .pner oi the cylinder when the ra: .ts lowermost position. The cylindrical war it tapers down to its reduced portion 3 c" and the tapered portion normally on top of cylinder is! where it supports the id in its lowermost position. The lower end o linder Iiili communicates by means oi a pipe 5 with the discharge end of pump 88. so that when the pump is in operation, that is, when is either recirculating its charge or is pumping through discharge pipe 42, the fluid pressure at discharge end is transmitted through pipe m to the cylinder I 84.

An upright member I86 is secured to the horizontal support 36 by means of an angle iron 29! and carries two counting devices in and I96 (Figs. 2 and 3 The latter are mounted between the upright member I166 and sub-panel 63 (Fig. 3) and their indicating faces I94 and I95 (Fig. 3) are visible through openings I94 arm L166,respectively, in the sub-panel. The

counting devices I92 and I96 are of the common reset revolution type and include drive shafts I66 and I91, respectively, for actuating the respective indicating faces, and also reset ting shafts I68 and I96, respectively. The resetting shai'ts are connected to the respective indicating faces by means of a one'way clutch (not shown), so that when the resetting shafts are rotated in a counterclockwise direction as viewed in Fig. 2, they move indicating faces of the respective counting devices to their initial zero positions, but when the resetting shafts are rotated in the opposite direction they are disconnected irom the indicating faces and therefore have no efiect.

The resetting shafts 168 and 196 are provided with pinions 266 and 26%, respectively, which mesh with the teeth on rack I82 (Fig. 2). The drive shaft I96 has a. sprocket wheel 262 fixed thereon, and the latter is connected to sp;ocket wheel I61 on shaft I66 by means of a chain 263 which passes over idler sprockets 266. The idler sprockets 264 are mounted on a shaft 265 suitably secured to the frame of the machine. The drive shaft I81 of the other counting dewdce is provided on its end with a driven clutch memher 266. A cooperating movable clutch member 201 coaxial with clutch member 288 is splined on a shaft 208 rotatably mounted in bearings (not shown) on the machine frame. The movable clutch member 201 is in the form of a col- 6 lar having a circumferential groove 201' in which the end of a yoke 28! is engaged (Fig. 2).

The latter is pivoted at its upper end on the v machine frame and has an arm 2IIi extending at right angles to the yoke from its upper end. A m spring 2 is connected at one end to the arm 2H and at the other end to the counting device I93 and normally holds arm 2!!) in a depressed position in which yoke 28! maintains clutch member 202* disengaged from its cooperatlog member 208. An electromagnet 262 is suitably secured to the machine frame above arm. 2m, and when it is energized, it draws arm 258 upwardly against the action of spring 2| I thereby causing yoke are to engage clutch member 29'' with its cooperating member 206. Shaft 208 is adapted to be driven by a sprocket wheel 2l3 mounted thereon which is connected by a chain 2M to a sprocket wheel 258 on shaft 552.

A lever 2w is pivoted on the frame of the machine adjacent the vertical rack I82 (Figs. 2 and 3). One end 238 of the lever extends obliquely upwardly and is adapted to engage a projection M9 on the rack when the latter is moved upwardly from the position shown in Fig. 2, while the other end of the lever is provided with a horizontal slot 228 through which a pin 22I extends. The pin MI is connected to the lower end of the'plunger 222 oi. a normally deenergized solenoid 223. When solenoid 228 is deenergized the end 258' oflever 2I8 adjacent the rack I82 is held away from the rack by pin 22I so that projection He may move either upwardly or downwardly past the lever, but when the solenoid is energized, the pin 22! moves the 4g slotted end oi lever 258 upwardly thereby projecting the opposite end of the lever into the path of projection 2 I9. In the latter position of lever 2I8, the projection 2" on the rack may move upwardly past the lever by engaging the end 2I8' of the lever with its upper edge and forcing it inwardly against the action of the solenoid; but projection 2| cannot move downwardly past the lever because when the lower edge of the projection engages the top of the end 2I8' of the lever, it acts to move the lever further into the path of the projection.

When pump 38 commences to operate, the pressure at the discharge end thereof is transmitted through pipe I81 to the lower end of cylinder I88 where it acts on the bottom of piston I88. Substantially simultaneously with the starting of pump 88, solenoid 228 is' energized by a circuit which will be described presently, thereby projecting the upper end 2" of the lever into on the path of projection 2" on the rack. The pressure on the bottom of piston I82 forces rack I82 upwardly so that the projection 2I8 moves above the upturned end 2I8' of the lever, and the I latter prevents the rack from returning to its 66 lowermost position. During the upward move- -ment of the rack, pinion I11 is rotated rapidly by the rack teeth in a clockwise direction (Fig. 2), and consequently disc I18 is driven by pinion I11 in the same direction through the friction collars 70 I19, I80. The pin I18 on disc I18 normally engages end l88a of the contact lever and holds the latter end against one side of contact member I68, but when disc I18 is rotated by the upward movement of the rack, it moves pin I18 in a counterclockwise direction (Figs. 10 and 11) until disc I18 makes substantially a complete revolution, whereupon pin I18 engages the other side of contact member I88. Any further upward movement of rack I82 after pin I18 strikes contact 688 will cause friction collar I18 to slide 5 on collar I 0! the disc Ilii. The instant pin 1 I18 disengages end I88a of the contact lever, the

latter is acted upon by spring I88 to engage its end iiib with contact "1. Qoiucident with the raising of rack I82 and consequent rotation of 9 disc I18, presettor motor 95 is started, as will be described presently in greater detail, and drives disc I II at a relatively low speed through shaft 85, gears 50 and III, shaft IE2, worm I83, worm wheel 86, shaft 85, worm lil, worm wheel I58 15 and shaft I59. As disc iii rotates, the cndlilax llll l 01' the contact lever gradually approaches pin I18 on disc I75 which is now held stationary by the rack.

In the event that a transaction is completed 20 before pin H8 is reengaged by the and 650: of the contact lever, solenoid 223 is deenergized so that lever 228 is withdrawn from the path of projection 2H, and pressure is released in cylinder I84 by stopping of the pump, Thercupon, 25 the weight I88 causes rack i 2 to move downwardly to its initial position and rotate pinion I'll and disc I-Ti rapidly in a counter-clockwise direction as viewed in Figure 2. Rotation of disc I18 by the downward. movement 01' rack I82 30 causes pin I18 to move in a clockwise direction (Figures 10 and 11) and recngage the end I650 of the contact lever, thereby engaging the latter end with contact 568 and disengaging end I851) of the contact lever from contact l81. The en- 5 gaging of the contact lever with contact I61 incident to the upward movement of rack I82 and the subsequent reengagement of the contact lever with contact I 68 incident tothe downward movement of the rack, as previously described, takes m place rapidly due to the fact t disc I18 and pin I18 are rotated at a relative high speed by the. movement oi. the rack. Accordingly, when pin I18 disengages end Ilia of is contact lever incident to the upward movement the rack, 5 the end I85b otthe contact lever immediately engages contact I81 due to the action of sprina so that a circuit may be traced from one commutator rings "2 through wires I12 a r contact 481, contact lever I88, wire i1! and n ck to the other commutator flame When N reengages end I 88a of the contact leve to the downward movement of rack I82, end of the contact lever engages contact I8 stantially simultaneously with the disengagement 88 of contact I81 by the end Illb of the contact lever so that a circuit is traced from one of the commutator rings I82 through wire I12, contact I88, lever I88, wire I18, and back to the other commutator ring I82. Qmsequently, the two so commutator rings I82 are electrically connected by one or the other of the circuits previously traced. except for the very short interval of time during which the contact lever is moved into engagement with one of its contacts I88, I81 and 88 out of engagement with the other.

In the event that disc III is rotated suillciently by motor 9| to engage the end Illa of the contact lever with'pin I18 before a transaction is completed, the contact lever will be moved slowly 70 by pin I18 to engage the end I881: thereof with contact I88 and disengage the opposite end from contact I61. Thismovement of the contact lever is a relatively slow one because the presettor motor 9| drives disc I" at a relatively slow speed. 15

motor will move the contact lever slowly and cause the electrical connection between the commutator rings I82 to be broken for the substantial period of time measured by the time required for disc ICI to move the end Illia of the contact lever into engagement with contact I86.

This appreciable break is utilized to stop the en'- tire machine, as will be presently described in greater detail. when the machine is thus stopped, it will be apparent that the end I851: of the contact lever will be brought into engagement with contact 658 as a result of the falling oi rack: I82. and accordingly the circuit previously traced will be restored so that the machine may be restarted for the same or another transactionaward movement of rack I82 also rotates; 288 and 528i in a clockwise direction as viewed in Fig. Rotation of gears 288, Mi this direction, however, has no effect upon the counting devices I82 and I". During the operation of motor ii the counting device I98 wil. actuated each. time that clutch 288, 287 is engage energization of electromagnet 252. That when clutch 288, 281 is engaged during the up ation motor 8i, drive shaft ill of the com device will be rotated through shaft mm...

as hm... 33. worm wheel 84, shaft 88, gears 58, I89 aha i522. sprocket wheel 2 I 8, chain 2, sprockeu 2H5, shaft 288 and clutches 2", 281. Sol M2 is controlled by a coin registering mecham..m which is acted upon by each coin and c used to energize the solenoid while clutch 288, 28? rotates an amount dependent on the value of the coin, as will be described presently. Accordingly, count lug device 583 will record an indication of the total value of the coins acting upon the coin reg=- istering mechanism during a transaction.

Drive shaft N8 of counting device I82 driven simultaneously with the corresponding shaft of counting device I88 because clutch I8I, I82 which drives shaft I88 is operated by solenoid H5 which is connected in the same circuit as solenoid 2%2, as will be described presently in greater detail. However, clutch member III is driven through variable speed transmission 81 and accordingly the amount that drive shaft I86 is rotated during energization of solenoids H8 and 2I2 is dependent on the setting of the variable speed transmission. In other words, shaft I88 will be rotated an amount directly proportional to the amount that disc 62 is rotated. Therefore, the counting device I82 will furnish an indication of the number of gallons purchased or preset by the sum of money indicated by counting device I83 at the current price shown by the price index member I33 of the variable sped transmission. At the end of a transaction when solenoid 223 is deenergized and the pressure is released in cylinder I84, rack I82 is released so that it moves downwardly under the action of weight I86 and rotates gears 288 and NI in a counterclockwise direction, as shown in Fig. 2. Rotation of gears 288, 28I in this direction causes resetting of the indicating devices I82, I88 to their initial zero readings. Thereafter, the indicating devices are ready for a new transaction.

The action of clutch I8II82 which controls the presetting of the upper disc 62 is governed by a coin controlled mechanism which will now be described.

Com sorting device Secured on the inner face of sub-panel 38 is a bracket 244 (Figs. 17 and 18) having a horizontal slot 248 in the vertical leg thereof coinciding with a similar slot 248 in the sub-panel. The slots 248, 248 are adapted to receive coins of any size including a silver dollar. A coin chute 241 having side walls 248 isconnected at its upper end to the vertical leg of bracket 244 so that the upper surface of the chute forms a continuation of the bottom of slots 245, 248. The lower end of the chute- 241 is supported on the outer end of the horizontal arm of bracket 244. Mounted on the upright leg of bracket 244 is a shelf 249 having downwardly extending flanges 258 connected to the bracket. The edge of shelf 248 nearest the up gist leg of bracket 244 is provided with a slot dough which a vertical gate 25! extends. The gate lies fiat against the upright leg of the bracket and is adapted to be raised and lowered so as open and close the inner end of the coin slot 2%. Thai; is, when the gate is in its lower oosl as shown in 17, it closes inner and slot 245, 245 to prevent insertion of a coin, but when the gate is raised it permits a coin pass through the slot and down the chute MT 5 lowering of gate 25i is con mold 252 fixed to a support 252" is verticallcg of bracket 28 near The solenoid has a plunger 2553' cit-ally connected at its lower end to on the gate. An insulated ing an electrical contact 256 on the inner face of the gate near the sltiou with a contact 25? on the 11g metal arm 258. The arm 258 is on an insulating block 259 which is elf 248. when the gate MI is l or lowered position, contact ment with its cooperating a. the gate is moved from one i the other, contact 256 brushes against 257 and establishes an electrical con- 2 tile opposite ends of a rod 288 are fixed (Figs. 17 and 18). The side walls 248 of the coin chute extend downwardly from a point below the top of the chute, and mounted on rod 268 in the space between the upper ends 01 side walls 248 and the gate 25I is a of dogs 26!. The dogs are adapted to slide along rod 288 and are arranged to be flat against inner face of the gate beneath theshelf 248. The bottoms of the dogs are beveled to fit losely against the inclined surface of chute 24?, and their inner ends are smoothly rounded in a vertical plane to remove the corhers and thereby facilitate the entrance of coins and impart to them an impetus derived from a spring action which will be described presently. Each dog 26! has afiixed thereto a rod 282 which extends through the adjacent flange 258 and is provided at its free end with an end piece 263 having a pin 254 thereon. The dogs 26| are normally urged towards each other by a pair of springs 265 of equal strength, each of which is conne' 'ed at one end to one of the flanges 258 and at the other end to the adjacent pin 264. A stop 268 is secured on each rod 262 to limit the amount that it may be moved inwardly by its corresponding spring 265, and the stops are arranged so that the dogs 26| are normally equidistant from the center of slot 245, 246 and spaced apart a distance shorter than the diameter of the smallest coin. It will be apparent that a coin in passing between the-dogs will move them apart thereby increasing the tension in springs 265, andwhen the diameter of the coin has passed the narrowest space between the dogs, the latter will snap toward each other under the action of springs 265 so that the curved rear portions of the dogs will give an impetus to the coin in the direction of chute 241.

Mounted on the chute 241 below the top thereof is a coin sorting device 268 which comprises a plurality of superimposed shelves 269, are. 21!, 212, 213 and 214, one for each coin denomination. Theshelves are inclined at the same angle as chute 241, that is, at an angle sumcient to cause coins to descend them by the action of gravity. The bottom shelf 258 is set into the lower end of chute 24? and forms a continuation thereof (Fig. 17). The top shelf 21 accommodates the largest coin, the silver dollar, and together extensions of side walls M8 a channel 214' slightly greater in width than the diameter of a silver dollar. The top shelf is slightly thicker than the coin of the second largest-size, the half dollar, and is formed. on its undersurface with a channel which cooperates with the top of the second shelf 213 to form a passage 213'" for half dollars. Similarly, the shelves 213, 212, 21! and 218 are formed on their under surfaces with channels which cooperate with the upper surfaces of the shelves directly beneath them to form passages 212, 21!, 218 and 268 for quarters, nickels, pennies and dimes, respectively.

As shown particularly in Figs. 15 and 17, the shelf 210, which rests on the bottom shelf or chute 241, terminates at its upper and slightly below the lugs 26! and is provided with a central elongated slot (Fig. 15) which is slightly greater in width than the diameter of a dime, but less than the diameter of a penny. The shelf 21!, which rests on shelf 216, terminates at its upper end slightly below the upper end of shelf 21D and is provided with a central elongated slot of a width slightly greater than the diameter of a penny but less than that of a nickel. Similarly, each of the shelves 212,

, 213 and 214 terminates at its upper end slightly below the upper end of the shelf directly beneath it and is provided with a. central elongated slot of a width slightly greater than the diameter of the coin accommodated by the passage directly below it but less than that of the coin accommodated by the passage which is formed in part by the top of the shelf. Each of the several slots is centrally disposed with respect to the other slots (Fig. 5). The upper portion of each shelf on both sides of its slot is beveled at its upper corner adjacent the slot to form a curvedsurface 215 which slopes gradually down to the upper surface of the shelf directlybeneath' it and contacts the latter shelf along a curved line 216 having a generally parabolic contour. It will be observed by reference to Figs. 17 and 19 that the upper portions of the shelves by reason of their curved surfaces 215- cooperate to form a. subit is impossible to insert a coin in such a. way as to make it descend the chute at an excessive speed. Also, the spring pressed dogs 26l serve to position the coins centrally with respect to the slots in the sorting shelves as the coins are forced between the dogs and to make all the coins pass down the chute at a substantially uniform velocity. This is so because springs 265 are of equal strength so that they will urge a coin toward the center of the chute as the coin passes between the dogs. When a dime is inserted in the slot 245, 246 it descends the center of chute 241' face down after passing between the lugs 26L Since the dime 'is smaller in diameter than the width of the slot in shelf 210 it will continue down chute 241 between the portions of shelf 210 forming the sides of its slot and will descend through the passage 269. A penny in passing down the chute will engage the curved surface 2T5 of shelf 216,since it is greater in diameter than the width of the slot in the latter shelf and cannot therefore pass into the dime passage. The penny will then ride along the curved surface 215 of shelf 218, but since it is smaller in diameter than the width of the slot in shelf 21i itwill not engage the portions of the latter shelf forming the sides of its slot, but will pass along shelf 218 over the slot therein and between the walls of the slot in shelf 216. The penny in its downward passage is supported near its periphery by the portions of shelf 218 on either side of the slot therein until it descends into its passage 216'.

Similarly, a'niclrel will ride over the curved surfaces 215 of shelves 210 and 21!, since its diameter is greater than the width of the slot in either of the latter shelves, and will pass along the top of shelf 21E between the walls of the slot in shelf 212. The quarter and half dollar coins will each descend along the curved surfaces 215 in the same manner until it arrives at its own shelf directly below the lowest shelf having a slot wider than its diameter, whereupon it will pass down its shelf between the walls of the slot and into its corresponding passage. The dollar coin will pass ovenaHiLlllo cp ved surfaces 215 and onto the top shelf 214. \wmmw As shown particularly in Fig. 17, the passages 269', 210, 2", 212' and 213 terminate in vertical chutes- 218, 218, 286, 28! and 282, respectively, which are welded or otherwise mounted on a plate 283. The plate 283 has openings 284 therethrough at the bottoms of the respective vertical chutes so that when coins pass into the vertical chutes from their respective passages they will fall into the openings 284 in the plate onto a base 285 (Fig. 20). The base 285 is inclined in a. direction at right angles to that in which chute 241 extends and is secured to the frame of the machine in any suitable manner. The vertical chutes 218 to 282, inclusive, are in the form of tubes having inside diameters slightly greater than the diameters of their corresponding coins,

and if a coin should land on its edge after falling down one of thevertical tubes, it will immediately fall over on its face, since it cannot balance on its edge in the tube on the inclined base 285. The top shelf 214 of the coin sorting device extends directly down to the outer edge of plate 283, and coins descending the lattershelf fall directly onto base 285 where they are stopped in their forward movement by a strip 286 mounted on the base. Plate 283 is inclined at the same angle as base 285, that is, at an angle sufllcient to cause coins to slide down base 283 by the action of gravity. The plate rests on the top of the base strip 286 is spaced :3. sufficient distance from the edge of plate 283 to provide a downwardly extending channel 287a for accommodating the dollar coin.v

base 385 "ox ider slot dii can 1 plate ml. the tower which top of pie e '6 Y here it gages roller 302 By the time coin has en gaged the roller, it has accused suflicient mothereby causing contacts 30i to close Connected to the bottom of base 285 above mentum to raise the roller and pass beneath it,

304 and at its other end to a plunger 300 of a solenoid 309. The latter is mounted on a bracket 3l0 secured to an upright member 3 which inturn is connected at its base to a cross member 3l2 secured to the top of plate 203 over the slots 5 therein. The portions of cross member 3l2 overlying channels 281 are cut as shown at 312 to provide a substantial clearance above plate 29!. When solenoid 309 is deenergized (Fig. its plunger supports cross member 305 in its lowermost position so that adjustment screw 306 permits plate 2 to lie flush with the top of base 285. However, when solenoid 309 is energized, its

plunger swings cross member 305 upwardly causing adjustment screw 306 to rotate plate 295 on or against the action of spring 293 to the line position shown in Fig. 20. A vertical ants 313 is me aids crosswn directly beneath plate at the base so the plates 2910;,

eat when j Aves to p er part oi plate om the plate tel t stationary contact rely cooperating we pairs w contact i are provided with :1 32-3, respectivehn A member 355 cartact arms 32% and argcon'tact arms ith mor M e 3w ire of con- 325, 325 are provided 326 and 32?, re- A- 5 contacts arms 32 0, niated from each other "r outer ends to the Khan soienoid 314 is s in its lower position f 295 r d flush )lrfi'i. plate 291, 322 and. s 3 are open and contacts ar When solenoid 3 is energized its plunger is drawn upwardly causing shelf 285 to assume the dotted line position shown in Fig. 20. Energlzatirrrn of solenoid 3 also causes contacts 322 and 223 to close and contacts 326 and 321 to open. A vertical coin chute 320 is mounted directly beneath shelf 255 adiacent vertical chute III and extends across base 205 so that it underlies the shelves 2050, 205b, 2050, 205d and 23k 0! the other coin chutes.

The closing of contacts "I in response to the presence of a coin on shelf 29! prepares a metering circuit which will be described by reference to the complete wiring diagram shown in Fig. 28. Referring to Fig. 28, the numeral 330 designates 76 a source of alternating current, one terminal of which is connected by a bus 33! to one terminal.

10 from one side of the current source through the high tension side 332 of the transformer, switch- 333 and back to the other side of the current source. The low tension side 332' of the step down transformer has one terminal connected to a ground G1, and the other terminal has-a wire 333 leading therefrom to a. terminal 337, from which a circuit is traceable through relay 333,

terminal 333 to contact member 343 or a normally open ground switch 34i. Another circuit is traceable from terminal 331 through relay 342, terminal 343, wire 344 to contact 343 or a normallyclosed switch 343, and from the, latter through wire 341, one oi the brushes 33 (Fig, 3) and its corresponding commutator ring 33, wire 343, contact arm 3i on presettor disc 32 (Fig. 7), normally open contacts 3!, the other contact arm 3|, wire 343, another of the commutator rings 33 and its corresponding brush 33, and wire 353 to contact 33i of a normally open ground switchv 352. A red light It is connected between the terminals 331 and 343, and an amber light A sis connected between terminal 333 and wire 33 The wire 333 is provided with an intermediate terminal 333 from which an energizing circuit for solenoid 1| is traceable through wire 334, one of the brushes 33 and its corresponding commutator segment 33, the terminal 333 where the circuit divides, one path leading through solenoid 40 1|, (Figs. 2, 3 and 7) to terminal 333 where it again divides, one path leading through wire333,

commutator ring 33 and its corresponding brush 33, wire..35,3,'tocontact 333 of a. normally closed /switch 33l, andirom the latter to ground Gr.

The other branch of the circuit through terminal 333 is traceable through wire 332 the short contact arm 31 (Fig. 8), normally open contacts 31', the, longer contact arm 31 which is connected to the plunger 13 of solenoid 1|, wire 333, commutator ring 33 and its brush 33, wire 334, one of the commutator rings 132 (Fig. 9), through 0011? tact lever I33 by one of the circuits previously traced, the other commutator ring I32, wire 333,- relay 333 and back to the grounded terminal of the low tension side 01' transformer 332, 332. The other circuit through terminal 333 completes a holding circuit for solenoid 1| and is traceable to the shorter contact arm 33 (Fig. 6), normally open contacts 33', the longer contact arm 33 which isconnected to the plunger or solenoid 1 I, commutator ring 33 and its brush 33, wire 333, terminal 333, wire 313, contact 311 o! a normally closed switch 312 which is mounted on the plunger oi solenoid 342, wire 313, switch member 314 which is'moun-ted on the plunger of solenoid 333, contact 313 or switch 314, and wire 313 to ground Gr. A green light G is connected between terminal 333-and wire 333. Also, a contact 3" prime is connected to wire 333, and is engaged by switch :12 when solenoid m is energized. From the bus 33I of the currentv source 333 another circuit istraceable through terminal 333, wire 33l, solenoid 43 (Figs, 1 and 2), and norma1ly open contact 3320! a Irounded switch 333. 73 The switch 333 is mountedon' the plunger 01' relay 342. and since the latter is normally deenergized, switch 333 is normally in its lowermost position in which it is disengaged from contact 332 but engaged with a contact 334. Contact 334 is connected by a wire 333 to a normally open switch 333 which is mounted on the plunger of relay 333, and the switch 333 has a contact 331 which is connected by a wire 333 to terminal 333. The pump motor 31, cyclomieter resetting solenoid 223 and presetto'r motor 3| are connected in parallel between wire 33l and a common terminal 333 which in turn is connected to a normally open switch 393 mounted on the plunger of relay 333. The normally open switch 393 has a contact 33l connected to ground Gr.

A circuit is traceable from another terminal 334 on bus 331, throughwire 395, to a terminal 333 where the circuit divides, one branch leading through wire 331 to terminal 333 where it again divides, one branch leading through wire 333, brush 33 and its corresponding commutator ring 33, wire 433, one of the contact arms 13 on disc 32 (Figs. 4 and 6), normally closed contacts 16, the other contact arm 13, the longer contact arm 33 which is connected to the plunger of solenoid 1|, normally open contacts 33, the shorter contact arm 33, commutator ring 33 and its brush 33, wire 43l, solenoid 232 which controls the coin gate 23I (Fig. 17), contact member 253 on the coin gate, and wire 432 to contact 433 of a normally closed ground switch 434. The other circuit through terminal 333 is traceable through wire 433, solenoid 333 which actuates plates 23! to 23le, inclusive, on the bottom oi the coin channels 231 to 231e, inclusive (Figs. 16 and 20), and from solenoid 333 to contact member 251 (Fig. 17) which is adapted to engage contact 233 when coin gate 23! is raised or lowered. The

' other circuit through terminal 333 leads through a relay 433 having a. plunger which carries the switch 343, and from relay 433 through wire 431 to terminal 433 where the circuit again divides,

- one branch leading through wire 433 to 9. nor- 3 to a switch member 423 which is controlledby a key-operated switch actuator 42l and from switch 423 the circuit divides, one branch leading through contact 422, wire 423, relay 424, which has a plunger carrying the normally open switch 413, to the grounded terminal 5. The other branch of the circuit through switch 423 is traceable through contact 423, wire 423, contact arm 323 which is mounted on upright 3H and is connected to the plunger 3|3 of solenoid 3 of the dime registeringmechanism (Figs. 20 and 21), through normally closed series connected contacts 321, 3214:, 321b, 3210, 321d and 321s or the dime. penny, nickel, quarter, halt-dollar and dollar coin registering mechanisms, respectively. From the contact arm 323'e of the dollar coin registering mechanism, the circuit continues through wire 421 to a grounded resistance 423. When switch 423 is closed, as shown in Fig.

28, it engages its contacts 42: and m, but'when the switch is opened by the key-controlled actuator 42l it engages a contact 423 which is connected to a normally opened; operating switch I having a contact I connected to wire "3.

The other branch of the circuit through terminal "I previously referred to is traceable through wire as to a terminal 434 where it again divides, one branch being traceable through stationary contact arm flle of the dollar coin registering mechanism (Fig, 21), normally closed contacts 326e, movable contact arm 324e, and

erioid Si l cf dime a u}: ca

t ve normal 22c, Mid, and 22, contact arms Hi g 3d and 3e, respectively. on the coin metering drum E (Figs. 2 and 23 to ing 3cof he penny metering mechanism .15. 7o a plurality of fixed pins in Wig. 26) spaced equidistantly around its periphery, andadjacent the row of pins (a on ring 3a 65 is a second row of pins 5a (Fig. 27) of the same number as pins la and equidistantly spaced around the periphery in staggered relation with respect to pins la. Each pin in projects through an elongated slot in extending at right 70 angles to the drum axis, and is secured by a nut 1a threaded on its inner end. By loosening the nuts la the pins In may be adjusted circumferentially on the drum. The circumferential distance d between each of the pins la and 75 the nearest pin Ia in the direction opposite to the direction of rotation of the drum is one onehundredth of the circumference of the rings on drum I56. Ring 3b of the nickel. metering mechanism is provided with a plurality of pins 4b suitably spaced around its circumference, 5 and adjacent to pins 412 is a row of pins 5b 01' the same number as pins 4b and similarly spaced around the periphery of ring 3b in staggered relation to pins lb. The circumferential distance d5 between each pin 4b and the nearest pin-445b in the direction opposite to the direction of rotation of the drum is one twentieth of the circumference of the drum rings. Similarly, rings #43 dime-and iter metering sneer i a row of H4 s acer: a mond the 1 y a prcspec s the "prepare button tension side 332 cf nssuming' that the BL customer first 2-3 (Fig. 28) so that the :tep down trans? 332*. is energized. imultaneously W'i e of the high nsion. side 332 of tie eiansrormer, the low tension ride 332 of transformer energizes presettor solenoid H by the energizing circuit previously traced. Energiza'tion of solenoid 1| causes pin 73 to be withdrawn from the opening in lower disc 54 and raised to its uppermost position, thereby closing contacts 66, 61' and 68' (Figs. 6 and 7). The closing of contacts 66' establishes the holding circuit for presettor solenoid H previously traced. Accordingly, when the customer releases prepare button 334 after a brief closure thereof, the presettor solenoid II will remain energized by the holding circuit previously traced.

The closing of contacts 61 in response to energization of presettor solenoid II causes relay 3 

